- firstly, in a pressure cooker take 3 tsp oil and saute spices. 
- now saute 1 onion, 2 green chilli and 1 tsp ginger garlic paste. 
- also, saute 1 cup tomato until it turns soft and mushy. 
- furthermore, add spices and 1 tsp salt. 
- saute on low flame, till the oil releases from tomato. 
- now add 1 cup black chana or kala chana soaked overnight. saute for a minute. 
- add 3 cups of water and mix well. 
- cover and pressure cook for 8 whistles or till chana get cooked completely. 
- now add ½ tsp garam masala, 2 tbsp coriander and mix well. 
- finally, serve kala chana curry with rice or roti.